No, demanding from others what they have not earned for themselves has nothing to do with capitalism. Capitalism provides goods or services at a price, which only you can deem worthy of what price they ask.
Those who believe they have a right to something they have not earned, nor are willing to contribute to the societal pool, but only take from it, are the ones who have tainted the phrase.
Building block or stumbling block.... choose.
P.S. Please, consider this.
If taxation is theft, then privitization is theft as well ...
I don't think social justice is an attempt to repair flawed human nature, it's a way to live with our flawed human nature together while trying to boost and incentives our good qualities and our humanity, and our solidarity (I voted solidarity).